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Questions about 1100S motor!
https://www.ausmini.com/forums/viewtopic.php?f=2&t=81754		 Page 1 of 1
Author:  Speedwell Racer [ Tue Jun 11, 2013 7:16 pm ]
Post subject:  Questions about 1100S motor!
Hey guys, currently looking at an 1100s short motor and have a few questions!
I've never before looked at an 1100s in detail so:
What does the engine number start with? To ensure it is what the guy reckons it is.
And he doesn't no if it was auto or manual so is there any way of telling if it was manual?
Anything else I should look out for when inspecting it?
It's a 4 hour drive away so want to make sure it's worth it!

Cheers, Rhys
Author:  Ace Radster [ Tue Jun 11, 2013 7:27 pm ]
Post subject: 
My cars got one, engine number starts with 12YDT. I think 12YD was another prefix with a different diff, but I guess there is no box included.
Author:  pturnedge [ Tue Jun 11, 2013 7:33 pm ]
Post subject: 
Hi Rhys, just had a bit of a look around, as far as I can see, the 1100s motors should start with 12 , Y (aussie built) , D (if it had a 4.1 final drive instead of standard 3.765) TA for manual or just A for auto / H (for high compression then the serial number. so a 1100S auto with standard drive should be 12Y/A/Hxxxxx

got this from http://www.elevenhundred.com/enginenum.php

Hope it helps
Author:  TheMiniMan [ Tue Jun 11, 2013 7:40 pm ]
Post subject: 
if it`s an automatic engine then it won`t have a dip-stick hole (unless someone drilled it allready to suit a manual conversion application) & it will have a deaper oil-pump recess than a manual block,,, unless someone has already fitted an oil-pump-adaptor-plate to convert it to manual

there are also a other items like the oil-pressure limit valve "seat" is different (2x holes in/across it) but you won`t be able to see that cause it`s stuck deep in the oil gallery

& the oil gallery leading to the limit valve will not be drilled through to the oil pump area yet (if it`s still an auto block) but would be drilled through if it`s either a manual block or an already converted auto block

whew!!! too much info my brain is going to explode :-)
Author:  jubblies [ Tue Jun 11, 2013 7:41 pm ]
Post subject: 
The dipstick hole is in a different spot on the auto.
The dipstick on an auto is near the flywheel on a manual so the block casting may not have a hole through it (just a lump where the manual dipstick goes). Also the oil filter for an auto comes from a different spot on the block.
Author:  drmini in aust [ Tue Jun 11, 2013 7:55 pm ]
Post subject: 
jubblies wrote:
The dipstick hole is in a different spot on the auto.
The dipstick on an auto is near the flywheel on a manual so the block casting may not have a hole through it (just a lump where the manual dipstick goes). Also the oil filter for an auto comes from a different spot on the block.

Auto's block has NO dipstick hole, it is in the gearbox casing instead.
Auto's filter is NOT on the block, it is on top of the gearbox at front. Oil goes from pump down to the gearbox through a pipe, is filtered, then comes UP the banjo pipe and into the block (reverse flow to what a manual has).

Early 1100S auto block is 12H/119/H (it's a UK block). These did have a dipstick hole (plugged) where a manual one is.

The last 1275 autos were in the Morris 1300 auto, prefix is 12YE/A/H.
Author:  jubblies [ Tue Jun 11, 2013 8:04 pm ]
Post subject: 
drmini in aust wrote:
jubblies wrote:
The dipstick hole is in a different spot on the auto.
The dipstick on an auto is near the flywheel on a manual so the block casting may not have a hole through it (just a lump where the manual dipstick goes). Also the oil filter for an auto comes from a different spot on the block.

Auto's block has NO dipstick hole, it is in the gearbox casing instead.
Auto's filter is NOT on the block, it is on top of the gearbox at front. Oil goes from pump down to the gearbox through a pipe, is filtered, then comes UP the banjo pipe and into the block (reverse flow to what a manual has).

Kind of what I was getting at Doc, these couple of things are different and to look out for them
Author:  drmini in aust [ Tue Jun 11, 2013 8:21 pm ]
Post subject: 
I will just add that to put an auto block on a manual box requires some mods to the oilways, also an oil pump spacer and plug the cross hole in the relief valve seat, as Matt said above.
See my sticky thread at top of the mods forum.
Note- my pics are gone from there (as I changed ISP) but I can email them if you want.
Author:  Kennomini [ Tue Jun 11, 2013 10:06 pm ]
Post subject: 
General question;
How do you tell if it has a lrg journal crank from outside the engine?
Author:  drmini in aust [ Tue Jun 11, 2013 10:15 pm ]
Post subject: 
Kennomini wrote:
General question;
How do you tell if it has a lrg journal crank from outside the engine?

The change point to large journal was at engine # 12YD/Ta/H10487-10488.
But to be sure, have a look at the big end caps through the fuel pump hole. Big square lumps on em = large journal crank.
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